FOREWORD

4.4 DATA OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

5 PROGRAM MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.1 Setting a Direction Angle for Backsight Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25.2 Retaining a Coordinate (STORE- NEZ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35.3 Remote Elevation measurement (REM). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-55.4 Missing Line Measurement (MLM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-85.5 Line Measurement (LINE). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-115.6 Offset measurement (OFFSET) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

5.6.1 Angle Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-155.6.2 Distance Offset Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-175.6.3 Plane Offset Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-195.6.4 Column Offset Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-215.7 External Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-235.7.1 Starting compatible communication program of AP-L1A . . . . . . . . . . . . . . . . . . 5-23 5.7.2 Setting for the communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23 5.7.3 Carrying out Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27

6 MEMORY MANAGE MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.1 View Internal Memory and Card Memory Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16.2 Protect a File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26.3 Rename a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26.4 Deleting a File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36.5 Copy a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36.6 Initializing Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

7 COMMUNICATION MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.1 Setting of PROTOCOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.2 Data File In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7.3 Data File Out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

8 PARAMETERS SETTING MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1 Parameter Setting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18.1.1 Parameters for Measurement and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18.1.2 Parameters for communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-38.2 Setting Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-58.2.1 Parameters for Measurement and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5 8.2.2 Parameters for Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-68.2.3 Password Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

9 CHECK AND ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.1 Checking and Adjusting of Instrument Constant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19.2 Checking the Optical Axis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29.3 Checking/Adjusting the Theodolite Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-49.3.1 Checking /Adjusting the Plate Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-59.3.2 Checking /Adjusting the Circular Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-59.3.3 Adjustment of the Vertical Cross-hair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-69.3.4 Collimation of the Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-79.3.5 Checking / Adjusting the Optical Plummet Telescope . . . . . . . . . . . . . . . . . . . . . 9-89.4 Adjustment of Compensation Systematic Error of Instrument . . . . . . . . . . . . . . . . . . . 9-9

9.5 Showing Constant List and Switch ON/OFF

Compensation Systematic Error of Instrument. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-119.6 How to adjust the date and time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-129.7 How to Set the Instrument Constant Value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-139.8 Reference Frequency Checking Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-149.9 Inspection and Adjustment of Optic Axis for Auto -Tracking. . . . . . . . . . . . . . . . . . . .9-15

10 SETTING THE PRISM CONSTANT VALUE. . . . . . . . . . . . . . . . . . . . 10-111 SETTING ATMOSPHERIC CORRECTION . . . . . . . . . . . . . . . . . . . . 11-1

11.1 Calculation of Atmospheric Correction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-111.2 Setting of Atmospheric Correction Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

12 CORRECTION FOR REFRACTION AND EARTH CURVATURE . . . 12-1

12.1 Distance Calculation Formula. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1

13 POWER SOURCE AND CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . 13-1

13.1 Rechargeable Battery BT-56Q . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1

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Topcon GTS-821A, GTS-822A, GTS-823A, GTS-825A instruction manual Correction for Refraction and Earth Curvature
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GTS-822A, GTS-825A, GTS-821A, GTS-822A, GTS-823A, GTS-825A, GTS-823A specifications

Topcon's GTS series of total stations, including the GTS-821A, GTS-822A, GTS-823A, and GTS-825A, are known for their robust features and exceptional precision, catering to the needs of surveying and construction professionals. These instruments blend advanced technology with user-friendly interfaces to enhance productivity in the field.

The GTS-821A model is designed for reliability and accuracy. It offers a measurement range of up to 1,000 meters and delivers precision within ±2 millimeters, making it ideal for jobs requiring fine detail. Key features include a high-speed angle measurement system and a dual-axis compensator that ensures accuracy on uneven terrain.

In contrast, the GTS-822A model takes performance a step further by incorporating advanced optical technologies. It includes a high-performance EDM (Electronic Distance Measurement) that allows for faster measurements with a range extending up to 2,000 meters. This model also integrates a clear display and simple user interface, facilitating easier operation for users of all skill levels.

The GTS-823A represents a perfect blend of portability and advanced functionality. It is lightweight, making it easy to transport between job sites. This model incorporates GPS capabilities, allowing seamless integration with GNSS systems for enhanced positioning accuracy. Its onboard software supports various surveying methods, making it versatile for different applications.

The GTS-825A stands out for its advanced features tailored for high-precision tasks. This model supports wireless communication, enabling real-time data transfer to smartphones and tablets, which enhances collaboration in fieldworks. With an impressive measurement capability, it extends the measurement range and precision, meeting the demands of large-scale projects.

All models in this series share a durable design reputation, ensuring they withstand harsh environmental conditions. Their user-friendly interfaces are complemented by robust software support, providing surveying professionals with the tools they need to optimize their workflows.

In summary, Topcon’s GTS series, including the GTS-821A, GTS-822A, GTS-823A, and GTS-825A, represent the cutting edge of surveying technology, boasting features like extended measurement ranges, high precision, advanced EDM, and GPS integration. These instruments not only enhance productivity but also ensure that professionals can achieve their surveying goals efficiently and effectively. Whether for routine land surveys or complex construction projects, the Topcon GTS series delivers exceptional performance and reliability.
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